Cultivator



(No Model.)

W. P. BETTENDORF.

OULTIVATOR.

. Patented Dec. 29, 1891.

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I ATENT FFICE.

IVILLIAM P. BETTENDORF, OF DAVENPORT, IOWA.

CULTIVATOR.

SPECIFICATION forming part of Letters Patent No. 466,215, dated December29, 1891.

Application filed August 5, 1891. Serial No. 401,765. (No model.) I

To all whom it may concern.-

Be it known that I, IVILLIAM P. BETTEN- DORF, of Davenport, county ofScott, and State of Iowa, have invented a new and useful Im-- provementin Cultivators, of which the following is a specification.

This invention relates to what are known as drag bars or beams forcultivators. These horizontal beams are jointed at their forward ends tothe frame or axle, so that they may swing vertically and laterally atthe rear end, and at the rear end they carry in various ways cross-headsor other supports, to which the shovels are attached. a

It is the aim of my invention to provide a simple, light, and rigidbeam; and to this end it consists, essentially, of a beam made completein one piece from commercial angle-iron cut and bent at certain pointsas hereinafter explained.

In the accompanying drawings, Figure I is a top plan view of a beam madein accordance with my invention. Fig. 2 is a side elevation of the same.Fig. 3 is a cross-section on the line 3 3. Fig. 4 is a verticalcross-section on the line I 4.

In constructing my beam I make use of iron or steel bars of I form incross-section. In order to produce a beam, I take a bar of suitablelength and, after splitting or incising its forward end horizontallythrough the middle, bend the upper and lower portions apart, as shown ata a, Fig. 2, so that the front end of the beam presents a forked shapeto receive a vertical pivot for connecting it with. the draft-head orcoupling.

In order to give an increased wearing-surface and prevent weakness atthe point where the pivot passes through the forked end, I upset thearms by means of dies or other suitable means and give them the form ofconical sockets a, with vertical central holes therethrough. Thesesockets are adapted to receive conical centers or pivots on thecoupling-head and also adapted to receive the vertical pivot-bolt, asindicated by dotted lines.

If the beam is to be used in connection with a pivoted cross-head oryoke to carry the shovels, as indicated in dotted lines in Fig. 1, Imake a slit or incision through the vertical web of the bar at asuitable point near its rear end and bend the metal upward and downward,as shown at a Fig. 2, thus leaving the central opening a through thebeam for the admission of the cross-head. By suitable dies or othermeans such as will be adopted by the skilled mechanic I upset andlaterally enlarge the bent portions a producing therein the conicalsockets a to receive the conical centers of pivots of the crosshead andthe vertical pivot-bolt therefor, as indicated by dotted lines.

If the rear end of the beam is to receive a steering-handle, I give thesame an upward curvature, as shown in Fig. l, and shear away the upperand lower flanges on one side of this bent portion, thus leaving at theextremity a Hat vertical face on one side of the web. Through thisportion I form the horizontal hole a and slit a to receive the bolts forthe attachment of the handle. This extended handle-receiving portion mayalso be given a lateral deflection, as shown in Fig. 2, in order tobring the handle in proper position. The form of the sockets and theshape and size of the forks at the front end and of the open portion atthe rear end may be modified within the range of mechanical skill inorder to adapt the beam for the peculiarities of the coupling orcross-head with which it may be used.

The cross-head (shown in dotted lines in Fig. 1) may of course be passedthrough the opening or arranged to encircle the widened part of thebeam-heads, in both classes being well known in the art. In either casethe ver tical widening of the beam permits the centers to be widelyseparated, so that the head will be firmly held.

Having thus described my invention, what I claim is 1. The metalcultivator-beam consisting of a single flanged bar having its forwardend divided and spread vertically, as shown.

2. A cultivator-beam consisting of a single flanged metal bar having itsforward end divided into two arms, the arms separated Vertically and theends of the arms upset and enlarged to form pivot-bearings.

3. A cultivator-beam consisting of a metal bar having near its rear enda transverselyincised and vertically-expanded portion with verticalsockets or pivot-bearings in the upper and lower edges.

vator-beam, consisting in horizontally incising or dividing an I-beam atthe required points, expanding the divided portion vertically toincrease the depth, and upsetting the expanded portions to formpivot-receiving sockets or bearings.

In testimony whereof I hereunto set my hand, this 29th day of June,1891, in the presence of two attesting Witnesses.

WILLIAM P. BETTENDORF.

Witnesses:

Tnos. B. CARSON, EARLE CLARK.

